AA 2989 then AA 2255 at Charlotte
Austin → Charlotte → Pittsburgh
Timetable, Charlotte time
11:52AA 2989 from Austin at the gate
08:55AA 2255 to Pittsburgh leaves the gate
21 h 03 apart on the timetable, overnight
AA 2255 leaves 21 h 03 after AA 2989 arrives on the timetable: more than half a day, so not a connection we count.